Publication: Swelling-assisted reduction of chitosan molecular weight in the solid state using hydrogen peroxide
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Issued Date
2017-08-01
Resource Type
ISSN
01700839
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2-s2.0-85006371773
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Mahidol University
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SCOPUS
Bibliographic Citation
Polymer Bulletin. Vol.74, No.8 (2017), 3077-3087
Suggested Citation
Nguyen Cong Minh, Hoang Ngoc Cuong, Pham Thi Dan Phuong, Simona Schwarz, Willem F. Stevens, Nguyen Van Hoa, Trang Si Trung Swelling-assisted reduction of chitosan molecular weight in the solid state using hydrogen peroxide. Polymer Bulletin. Vol.74, No.8 (2017), 3077-3087. doi:10.1007/s00289-016-1880-3 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/42198
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Title
Swelling-assisted reduction of chitosan molecular weight in the solid state using hydrogen peroxide
Abstract
© 2016, Springer-Verlag Berlin Heidelberg. Abstract: Chitosan in the solid state has been degraded in a controlled way by treatment with hydrogen peroxide at room temperature. Chitosan was swollen in diluted NaOH, making it more susceptible to the peroxide treatment. The product has been characterized by intrinsic viscosity, FTIR infrared spectroscopy and roentgen diffraction. The molecular weight and the intrinsic viscosity were reduced significantly (about tenfold). The degree of deacetylation did not change. The chitosan product has a low viscosity (about 100 cP), a lower molecular weight (1.4 × 102 kDa), a high purity and a high crystallinity. It can be used in many potential applications. This method is easy and suitable for a large-scale process. Graphical abstract: [Figure not available: see fulltext.].